Peridot and Sugilite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
1.54-1.55
2.69-2.79
Fracture
Conchoidal
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Poor
Poor on {0001}
Mohs Hardness
6.5-7
5.5-6.5
Chemical Composition
(Mg,Fe)2SiO4
KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Peridot and Sugilite Chemical Formula
While comparing Peridot and Sugilite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Peridot and Sugilite chemical formula.
- Chemical formula of Peridot- (Mg,Fe)2SiO4
- Chemical formula of Sugilite- KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Peridot and Sugilite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Peridot and Sugilite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Peridot and Sugilite Optical Properties during the identification of gemstone. Specific gravity of Peridot is 2.69-2.79 whereas that of Sugilite is 2.69-2.79.